Crossword Genius

Up-front requirement: change old pic on Tinder (12)

Ross

I believe the answer is:

precondition

'up-front requirement' is the definition.
(a requirement before something happens)

'change old pic on tinder' is the wordplay.
'change' is an anagram indicator.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'o'+'pic'+'on'+'tinder'='opicontinder'
'opicontinder' is an anagram of 'PRECONDITION'.

(Another definition for precondition that I've seen is " Prerequisite".)

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